baber/WOPTO huggingface dataset:
Patent GB-526269-A (GB)
Title: Improvements in air speed indicators
IPC: G01L7/00
Filed: 1939-03-11
Abstract: 526,269. Air speed indicators. HELMORE, W. March 11, 1939, No. 7891. [Class 69 (i)] In an air speed indicator for aircraft in which change of pressure in a Pitot head is indicated by an instrument remote from the head, and the latter is provided with heating means to prevent ice-formation thereon, the heating means is controlled bv an ice-accretion detector to provide heating of the head only when ice is present. A Pitot-head 11, with an electrical heating coil 14, is enclosed in a casing 12 with openings 13 to act as a static head ; the Pitothead and static head are connected by pipes 21, 22, to act on opposite sides of a collapsable capsule 17 to operate an indicating pointer 20. The ice-accretion detector comprises a tubular part 23 surrounded by an electric heater 39 and provided with one or more openings 24 smaller than the opening of the Pitot-head, the tubular part 23 being connected by pipe 27 to a casing 25 divided by a diaphragm 26 ; the Pitothead 11 is connected by pipes 21, 28 to the casing 25 at the opposite side of the diaphragm 26, and the pipe 27 is connected by a bleedpipe 38 to the static head. In operation, when ice forms in the aperture 24, the pressure above the diaphragm 26 is reduced, and a switch 30 is closed to energize an electro-magnet 35 and thereby close a switch 36 to supply current to the heating coils 14, 39, until the aperture 24 is free. The heater 39 may be omitted. In another form, the ice-accretion detector is enclosed within the static head and a single heating coil surrounds the Pitot-head and the part 23.
Patent GB-350039-A (GB)
Title: Improvements in or relating to adapters for thermionic valves
IPC: H01R33/94
Filed: 1930-03-11
Abstract: 350,039. Thermionic valve-holders ; valve amplifying circuits. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London, and GIBBONS, H. V., 25, Willow Road, Bedford. March 11, 1930, No. 7902. [Classes 39 (i) and 40 (v).] An adapter has a terminal for external connection and a switch whereby the grid socket may be either connected to the grid pin and disconnected from the terminal or disconnected from the pin and connected to the terminal. As shown in Fig. 1, the grid socket S<4> is connected with a movable contact engaging with one of two contacts f<1> connected with the terminal t and f<2> connected with the grid pin p<4>, the other sockets being connected directly with the corresponding pins. Two other terminals t<2>, t<3> are connected together permanently. In the arrangement shown in Fig. 3 for connecting in circuit a gramophone pick-up k and a potentiometer volume control u, the intermediate terminal of the control is connected with the terminal t, and the outer terminals with the terminals t<1>, t<2>, the pick-up being also connected with the terminals t<1>, t<2>. The switch may also be used for (a) changing over from cumulative grid to anode bend detection (Fig. 5, not shown), (b) connecting the valve alternatively to input circuits tuned to different frequencies (Fig. 6, not shown), or (c) connecting the valve alternatively with each of two preceding valves (Fig. 7, not shown). The adapter consists of two parts 1, 2 (Figs. 8 and 10) between which the leads connecting pins f<2> and sockets s<3> are arranged. The terminals t are mounted on an arcuate projection 1a. The part 2 has a central boss 2b around which is mounted a rotatable ring 4 held in position by an insulating plate 6 and having an insulating handle 5 and contacts 4b engaging with contacts f<1>, f<2>, 8.
Patent GB-935630-A (GB)
Title: Process for the manufacture of fluorubines
IPC: C07D/
Filed: 1962-02-28
Abstract: Fluorubines are made by heating a 2:3-diamoniquinoxaline of the formula:- <FORM:0935630/IV(a)/1> where A is an arylene residue, to bring about the splitting off of ammonia.  Quinoxalines specified wherein A is an anthraquinone, anthracene, naphthalene or benzene residue or a benzene residue substituted by chloro-, methylor methoxyradicals.  Substances which lower the melting-point such as benzoic or naphthoic acid, zinc chloride or inert organt solvents such as nitrobenzene, trichlorobenzene or dimethylformamide may be present during the heating.  Examples are given.  The products are pigments which colour polyamides in yellow shades.  Those containing a vattable residue may be used as vat dyes.
Patent GB-116740-A (GB)
Title: Improvements in Binder Files.
Inventor: TAYLOR DANIEL
IPC: B42F13/08
Filed: 1917-06-01
Abstract: 116,740. Taylor, D. June 1, 1917. Flexible-band files; sheets; attaching files to covers; perforators.-A loose-leaf binder comprises eyed wires 6 engaging the folds of the doubled sheets, flexible binding-strips 3 which are passed through the eyes 6A of the wires 6, and slotted binding-members 1, 2 carrying sliding members 4 which cover the bent-down end of the strips 3. The binder may be secured within covers 13, 14 by passing the strips 3 through slots 12 in the members 1, 2, through slots 18 in the flaps 16, 17, and through the eyes 6<A>. A leafperforator 7 may be pivoted at 7<A> to the member 1.
Patent GB-546844-A (GB)
Title: Improvements in or relating to circular knitting-machines
IPC: D04B9/10
Filed: 1941-06-25
Abstract: 546,844. Knitting - machines. FIDELITY MACHINE CO. June 25, 1941, No. 7966. Convention date, Nov. 12, 1940. [Class 74 (ii)] Each of the cylinders of a double-cylinder machine is of stepped formation, the part 11 of lesser diameter projecting axially :beyond the part 10 of greater diameter and having the needle tricks 34 therein alternating with the tricks 16 in the part 10. The needle tricks are inclined, and the tricks 34 in one cylinder are in alignment with the tricks 16 in the other cylinder and serve to guide the hooks of the fully projected needles. The tricks 34 may be deepened to form slots. Each of the cylinders comprises at' least two cylindrical members fitting one within the other, the inner member constituting the part 11, and the outer member having the inclined needle tricks 16. The upper cylinder may have a mandrel 65 arranged within it, the lower end 70 of the mandrel serving to guide the knitted fabric through the lower cylinder to take-up means arranged below that cylinder and comprising endless belts or grooved wheels driven at peripheral speed equal to the rate of knitting. The machine may have two or more feeders, the yarn for each feeder passing through tension discs 61, and one or more guides may be provided for feeding a wire or other weft so that it is laid into the tubular fabric without knitting. The fabric may be impregnated with a latex or coated with a more viscous or semi-liquid coating as it passes through the lower cylinder. The latex may be sprayed from a nozzle head 80 at the end of a pipe 81 mounted within the needle cylinders. The more viscous liquid may be applied to the fabric through notches in the circumference of a saucer-like member which fits within the lower cylinder so as to contact with fabric passing downwardly between the member and inner walls of the cylinder.
Patent GB-753157-A (GB)
Title: Improvements relating to the preparation of anhydrovitamin a and to intermediates thereof
Filed: 1954-03-19
Abstract: Anhydrovitamin A is obtained by reacting a pentaene having the formula <FORM:0753157/IV(a)/1> with a dehydrating agent, e.g. a strong or weak acid, iodine, phenyl isocyanate, a Grignard reagent, a Lewis acid or boron trifluoride.  Compound II may be obtained by reacting a compound of the formula <FORM:0753157/IV(a)/2> (wherein R represents an alkyl radical having not more than 6 carbon atoms) with a metallic amide or alternatively by treating a compound having the formula <FORM:0753157/IV(a)/3> with a Grignard reagent to provide a compound of the formula <FORM:0753157/IV(a)/4> wherein X represents halogen, reacting this compound with b -ionone and hydrolysing to provide a compound having the formula <FORM:0753157/IV(a)/5> which is subsequently reduced, e.g. with lithium aluminium hydride or with hydrogen in the presence of a metallic catalyst.  Compound III may be obtained by reacting a compound of the formula <FORM:0753157/IV(a)/6> with a halogenating agent, e.g. hydrochloric acid, hydrobromic acid, phosphorus halides or phosphorus oxyhalides and treating the resultant halogenated compound with a strong base.
Patent GB-933267-A (GB)
Title: Improvements relating to axially extensible torque-transmission drives
IPC: F16D3/06
Filed: 1960-03-07
Abstract: 933,267. Rectilinear-motion bearings. B. WALTERSCHEID - MULLER, and K. SCHROTER. March 7, 1960 [March 7, 1959; March 20, 1959], No. 8075/60. Class 12 (1). [Also in Group XXIV] A coupling allowing relative axial movement between telescopic shafts 1, 2 comprises axial grooves 1A, 2A in the shafts containing freely floating rods 3, 4 acting in the manner of keys, cross-pins 5, 6 acting as stops to limit the axial movement. The rods 3, 4 may be made of steel, non-ferrous metal or synthetic material. Either the rods or the shafts may be magnetized. In Figs. 3-7 (not shown), shaft couplings substantially similar to those of Specification 933,266 are illustrated.
Patent GB-1506252-A (GB)
Title: Hinge
IPC: E05D7/04
Filed: 1975-02-26
Abstract: 1506252 Hinge mountings BLUM GmbH 26 Feb 1975 [26 Feb 1974 1 April 1974] 8128/75 Heading E2F In a hinge of the type in which link arms are pivotally connected between one mounting component and an elongate hinge arm 1 secured to a mounting plate 4, the arm 1 is V-shaped in longitudinal section (Fig. 1) and comprises a lower securing portion 5 and an upper portion 7 which carries bearings 6 for the link arms; the two portions being relatively adjustable toward and away from each other, with an adjustment screw 14 effecting this movement. In the embodiment shown portion 5 is slidable longitudinally on an intermediate part 2 (when screw 11 is released) and the intermediate part is slidable transversely on the mounting plate (when screw 17 is released). In a further embodiment (Figs. 3, 4, not shown) the hinge arm attaches directly to the mounting plate by engagement between the sides (19) of the portion 5 and the plate; two apertures (20) being provided in the portions 5, 7 so that an implement can be inserted to effect relative longitudinal movement by leverage. A further embodiment (Figs. 5-8 not shown) employs the arm in arrangements featured in Specification 1506251 and 1506253.
Patent GB-1016452-A (GB)
Title: Improvements in textile spinning and other machines
Inventor: MITCHELL JAMES
IPC: D01H13/16
Filed: 1963-02-28
Abstract: 1,016,452. Stop motions. T. M. M. (RESEARCH) Ltd. March 18, 1964 [Feb.28, 1963], No. 8134/63. Heading D1D. In a textile machine stop motion wherein a pivoted feeler 14 is normally held in an inoperative position by the running thread (left hand side of Fig. 1) and thread breakage or slackening causes feeler 14 to first undo gravity in a first direction to bring an associated conducting element 15 against a contact strip 16 (centre of Fig 1.) to activate a relay and stop the machine, a body 19 1  preferably of a flexible material such as rubber, is provided to prevent the feeler 14 pivoting in a direction opposite to said first direction except under manual pressure whereupon the element 15 engages a slot, recess-or stop in body 19 such that the feeler 14 is held in an inoperative position (right hand side of Fig. 1.). The feeler 14 is held in such a position if it desired to restart the machine without rethreading the broken end. As shown the element 15 is mounted on the rear end of a shaft 12 pivoted in a conducting bar 11, the feeler 14 being mounted in the front end of the shaft. The conducting strip 16 is mounted on an insulating strip 17 and the bodies 19 which are non-conducting are mounted on the strip 16.
Patent GB-216615-A (GB)
Title: Improvements in overwinding gear for electric cranes
IPC: B66C15/00
Filed: 1923-03-22
Abstract: 216,615. Greenaway, B. E. r. March 22, 1923. Switches, quick make-and-break; actuating.- A switch arm h is connected by a spring j to a lever c, pivoted at c<9>, and actuated by Geneva stop mechanism in which a wheel having a single tooth e<2> rotates the larger wheel a through one tooth each time it revolves, until finally a stop as on the latter wheel contacts with and rotates the lever c against the action of the spring g. This movement separates the lever c from the switch arm h tensioning the spring j in the process. The continued movement of the lever a to the limit of the slot c<7> causes the quadrant c<6> to act as a wedge to move a pin h<5> axially to release the spring latch i<2>, Fig. 3, and thus allow the spring j to break the switch quickly. When the rotation of the geneva stop mechanism is reversed, the spring g causes the lever c to follow the stop a<6> until it is arrested by contact of the stop c<3> with the locking lever d. During the succeeding revolution of the wheel with the one tooth, the flat part e<4> of a sleeve allows the upper part of the locking lever to be moved by the spring d<2> sufficiently for the lower end to be moved out of register with the stop c<3>. The spring g then restores the lever c to re-establish the circuit quickly. The switch arm is fitted with carbon breaks acting both on making and breaking contact. The geneva stop mechanism is driven by a chain from some part of mechanism such as a lift or hoist.
Patent GB-101460-A (GB)
Title: Improvements in or relating to Means for Slidably Connecting Multi-concentric Driving Members, with Special Reference to Gear Boxes for Motor Vehicles.
Inventor: SKAIFE WALTER
IPC: F16D3/06
Filed: 1916-06-08
Abstract: 101,460. Skaife, W. June 8, 1916. Securing articles on shafts; clutches, friction.- In means for slidably securing together a number of concentric parts, shown applied to a clutch part, a toothed wheel, and a shaft employed in the gear-box of an automobile, a key e with or without an enlarged head h, passes through a slot in the sleeve b of the wheel c and engages a slot g in the clutch cone d and a slot or flat on the shaft a.
Patent GB-558745-A (GB)
Title: Improvements in or relating to synthetic resin adhesives
IPC: C09J161/00
Filed: 1942-06-15
Abstract: 558,745. Phenol-aldehyde, urea-aldehyde resins. KNOTT, G. L., BALLEY, E. J. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 15, 1942, No. 8157. [Class 2 (iii)] A synthetic resin adhesive which does not penetrate porous surfaces and is thus suitable for bonding plywood is obtained by incorporating wood flour of such fineness that it passes through a 180 B.S.S. mesh sieve with a liquid thermosetting resin, e.g. a urea formaldehyde or phenol formaldehyde condensate. In examples (1) an alkali condensed resin was obtained by condensing phenol with formaldehyde solution for 15 mins. at 98‹C. using 2 per cent. caustic soda as catalyst and then dehydrating the solution to a solid content of 70 per cent. ; the product was then mixed with 10 per cent. of airfloated wood flour. (2) Urea and formaldehyde in the ratio 2.2 to 1.0 were condensed at 98-100‹C. for 3¢ hours under reflux and the product dehydrated at a pH of 7.0-7.3 and then mixed with 10 per cent. of airfloated wood flour. (3) the resin of Ex. 2 was mixed with 10 parts ammonium chloride, 50 parts water and 20 parts airfloated wood flour. The adhesive may be spread hot on veneers which are then allowed to dry and stored ; laminated products are obtained by hot pressing the treated veneers.
Patent GB-878512-A (GB)
Title: Evaporation of liquids containing dissolved materials
Inventor: CHANDLER JOHN LESLIE
IPC: B01D1/00
Filed: 1957-03-12
Abstract: <PICT:0878512/III/1> A process for the evaporative extraction of material from solution in a liquid comprises the steps of introducing a stream of gas into a tube lying with its length horizontal, heating some solution to a temperature at or near its boiling point and introducing it to the tube at a point or points clear of the walls thereof and within the gas stream in the tube so that the solution forms a layer on the walls of the tube and travels the length of the tube concurrent with, but slower than the gas stream, the gas stream then entraining vapour from the solution, separating the residue of the solution from the gas stream and entrained vapour emerging from the tube, and removing the residue from the tube. In a prepared embodiment applied to the recovery of salt from brine, the brine is first heated and partially evaporated in a solution heater 7 and then calcium sulphate which is precipitated is removed in filter 8 and then the solution passed to the evaporation chamber 3 via the tube 1. Evaporation followed by crystallisation occurs and a slurry is formed which passes into the cyclone or separating chamber 5 via the exit 4. The slurry passes into the thickener 9 and after setting the mother liquor is pumped back to the solution heater 7 via the recycling tube 10. The thickened slurry is passed to a centrifuge or filter 11 and the solids are removed on a conveyer belt 13 to a storage container 14.
Patent GB-821629-A (GB)
Title: Process for halogenating phthalocyanines
IPC: C09B47/10
Filed: 1956-03-15
Abstract: Phthalocyanines are halogenated by heating with a mixture of a compound of the Friedel-Crafts' type and sulphur trioxide, anhydrous sulphuric acid, or a compound of the formula: R-SO2-Halogen, in which R is -OH, -O-metal, or an organic residue.  An agent lowering the melting-point may also be present, e.g. sodium chloride or fluoride, calcium or potassium chlorides, sulphur dioxide, sodium sulphite, or magnesium sulphate.  In examples: (1) copper, nickel, cobalt, zinc, iron, aluminium, tin, chromium, manganese, magnesium, and metal-free phthalocyanines are reacted with aluminium chloride and chlorsulphonic acid or the sodium or calcium salt thereof, with or without sodium chloride or fluoride.  Other examples describe the reaction of (2) copper phthalocyanine with aluminium chloride and methane sulphochloride or sulphuric acid; (3) sodium copper phthalocyanine disulphonate with chlorsulphonic acid and aluminium chloride; (4) ferric chloride, copper phthalocyanine, and chlorosulphonic acid; (5) copper phthalocyanine, chlorsulphonic acid, aluminium chloride, and sulphur dioxide; (6) copper phthalocyanine, aluminium chloride, and fluorsulphonic acid.
Patent GB-153833-A (GB)
Title: Improvements in and relating to levels and inclinometers
IPC: G01C9/20
Filed: 1920-03-20
Abstract: 153,833. Charles, F. W. March 20, 1920. Clinometers. - A spherical bulb 6 containing liquid is mounted in a casing 1 so as to protrude through a circular opening 4 on which is marked a scale 5. Circular straps 10 on the front of the casing in the horizontal and vertical plane, the latter markad with a scale 10<b>, retain the bulb which is further secured by two straps 11 on the inside of the casing, these being split at 11<a> to hold the nech 7 of the bulb. Lamps in the reflecting-chambers 13 serve to illuminate the instrument.
Patent GB-1530864-A (GB)
Title: Hard surfaced well tool and a method for the manufacture thereof
IPC: B22F7/08
Filed: 1977-02-28
Abstract: 1530864 Boring earth &c REED TOOL CO 28 Feb 1977 [27 Feb 1976] 08314/77 Heading E1F A well tool, such as a drill collar, stabiliser or tool joint 10, is provided with a deposit 22 of coarse grained sintered tungsten carbide in an alloy steel matrix on the exterior of the tool, the deposit 22 being at least partly covered by a layer 24 of fine grained cast tungsten carbide which is welded to the deposit 22.
Patent GB-740445-A (GB)
Title: An amplifier for amplifying low currents
IPC: H03H7/24
Filed: 1952-04-01
Abstract: 740,445. Electrostatic screening for resistors. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 1, 1952 [April 7, 1951], No. 8325/52. Class 37. [Also in Group XL (c)] In an amplifier for detecting small currents and utilizing an input resistor 3, Fig. 2, of high value, connected to a negative feedback path 2, the effect of stray input capacity is reduced by providing a compensating field in the space surrounding the resistor, such that the potential of any point on its surface and that of the immediately surrounding space is the same. The field may be produced by means of a pair of screens 6, 6a through which the resistor 3 passes, the screen 6a nearer the " live " input terminal 4 being earthed and the other screen 6 being connected to an auxiliary feedback path 8. The screen 6 may alternatively be connected to the feedback path 2. In an embodiment, Fig. 3, the resistor 3 is supported by an insulating member 33 from an adjustable micrometer head comprising a threaded rod 34 and nut 37. The screen 6a is fixed, while screen 6 is made adjustable, being supported by insulating members 40 from a further micrometer head comprising an externally-threaded tube 41 and adjusting nut 42. Further screens may be placed intermediate the screens 6, 6a, Fig. 4 (not shown), being connected to tappings on a potentiometer connected across the screens 6, 6a. In another arrangement, Fig. 5 (not shown), the input resistor is divided, comprising one resistor placed between the screens 6, 6a and a second resistor lying between screen 6a and the input terminal 4.
Patent GB-690924-A (GB)
Title: Device for rotating a door
IPC: B63B19/197
Filed: 1949-03-28
Abstract: 690,924. Door operating appliances. MERCIER, J. G. March 28, 1949, No. 8336/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 30, 1949.] Class 65 (i) A door panel, for use. particularly in connection with marine hatchway openings, comprises extensible and retractable means positioned within the panel, one end of said means being connected to the panel and the other end adapted to be pivotally connected to a support outside the panel, power means positioned within the panel for actuating the extensible and retractable means, and means for controlling the power means to actuate the expansible and retractable means, whereby the panel will pivot about an axis suitably spaced from the said support. As shown, two marine hatch covers 30 are hinged at their adjacent edges about a common shaft 37, the opposite edge of one cover is hinged at 32 to an edge of the hatchway opening 31, and the opposite edge of the other cover is provided with rollers 45 adapted to run along the sides of the hatchway opening. Each cover contains within it one or more hydraulic jacks, the cylinders 14 of which are pivoted to the cover and the piston rods 41 of which are pivoted at 42 to respective plates 34 pivotally mounted on the shaft 37. The arrangement is such that the piston rods are retracted when the covers are in the closed position, while simultaneous extension of the piston rods causes the covers to pivot about the hinge 32 and shaft 37 to assume a side-by-side vertical and open position. In a modification a single cover is hinged to an edge of the hatchway opening, and the piston rod of a hydraulic jack contained within it is pivoted to a fixed support at a point suitably spaced from the hinge axis. The power and control means for each cover comprise a liquid reservoir 1 feeding a pump 4 driven by an electric motor 5. The pump outlet is connected to a switch 8 adapted to stop the motor when the pump delivery pressure attains a predetermined value, to hydraulic pressure accumulators 9 and 12, and to a selector valve 13 adapted to connect the pump delivery to one or the other end of jack cylinders 14. A thermal relief valve 15 and a pressure relief valve 21 are provided.